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* config/tc-avr.c: Add specified_mcu variable for selected mcu.

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(enum options): add OPTION_RMW_ISA for -mrmw option.
	(struct option md_longopts): Add mrmw option.
	(md_show_usage): add -mrmw option description.
	(md_parse_option): Update isa details if -mrmw option specified.
	* doc/c-avr.texi: Add doc for new option -mrmw.
	* gas/avr/avr.exp: Run new tests.
	* gas/avr/rmw.d: Add test for additional ISA support.
	* gas/avr/rmw.s: Ditto.
This commit is contained in:
Denis Chertykov
2014-03-29 09:41:32 +04:00
parent 9f75a539d8
commit d24e46e3e2
7 changed files with 115 additions and 3 deletions
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20
gas/config/tc-avr.c
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@@ -326,8 +326,10 @@ static struct mcu_type_s mcu_types[] =
{NULL, 0, 0}
};
/* Current MCU type. */
static struct mcu_type_s default_mcu = {"avr2", AVR_ISA_AVR2, bfd_mach_avr2};
static struct mcu_type_s specified_mcu;
static struct mcu_type_s * avr_mcu = & default_mcu;
/* AVR target-specific switches. */
@@ -398,7 +400,8 @@ enum options
{
OPTION_ALL_OPCODES = OPTION_MD_BASE + 1,
OPTION_NO_SKIP_BUG,
OPTION_NO_WRAP
OPTION_NO_WRAP,
OPTION_RMW_ISA
};
struct option md_longopts[] =
@@ -407,6 +410,7 @@ struct option md_longopts[] =
{ "mall-opcodes", no_argument, NULL, OPTION_ALL_OPCODES },
{ "mno-skip-bug", no_argument, NULL, OPTION_NO_SKIP_BUG },
{ "mno-wrap", no_argument, NULL, OPTION_NO_WRAP },
{ "mrmw", no_argument, NULL, OPTION_RMW_ISA },
{ NULL, no_argument, NULL, 0 }
};
@@ -511,7 +515,9 @@ md_show_usage (FILE *stream)
" -mno-skip-bug disable warnings for skipping two-word instructions\n"
" (default for avr4, avr5)\n"
" -mno-wrap reject rjmp/rcall instructions with 8K wrap-around\n"
" (default for avr3, avr5)\n"));
" (default for avr3, avr5)\n"
" -mrmw accept RMW instructions\n"
));
show_mcu_list (stream);
}
@@ -558,7 +564,12 @@ md_parse_option (int c, char *arg)
type - this for allows passing -mmcu=... via gcc ASM_SPEC as well
as .arch ... in the asm output at the same time. */
if (avr_mcu == &default_mcu || avr_mcu->mach == mcu_types[i].mach)
avr_mcu = &mcu_types[i];
{
specified_mcu.name = mcu_types[i].name;
specified_mcu.isa |= mcu_types[i].isa;
specified_mcu.mach = mcu_types[i].mach;
avr_mcu = &specified_mcu;
}
else
as_fatal (_("redefinition of mcu type `%s' to `%s'"),
avr_mcu->name, mcu_types[i].name);
@@ -573,6 +584,9 @@ md_parse_option (int c, char *arg)
case OPTION_NO_WRAP:
avr_opt.no_wrap = 1;
return 1;
case OPTION_RMW_ISA:
specified_mcu.isa |= AVR_ISA_RMW;
return 1;
}
return 0;